The example seems to lack the necessary FAKE ICOO code from User waypoints, that now seems necessary fro the World map to not place user Waypoints at the North Pole, when usiing navigraph…
Even if this is strictly not necessary, LNM is now exporting pln files with this added parameter, and there are issue with re-loading a PLN in mSFS, that has been saved from the world map.
ie Its not the same,
If you then save it again, and compare it with the original world map generated pln, they are different.
A SDK definitive format for the pln file would clear up a lot of these ambiguous issues.